Function addPreview

addPreview(params): {
object: Object3D;
onProgress: ((downloadProgress: number) => void);
}
Parameters
- params: {
  guid: string;
  parent: Object3D<Object3DEventMap>;
  } & PreviewInfo
Returns {
object: Object3D;
onProgress: ((downloadProgress: number) => void);
}
- object: Object3D
- onProgress: ((downloadProgress: number) => void)
  - - (downloadProgress): void
    - Parameters
      downloadProgress: number
      Returns void